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Finding the Fourth Proportional to 291,098.75, 436,648.10 and 80,736.69

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Solution

The fourth proportional to 291,098.75, 436,648.10 and 80,736.69 is: 121,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,098.75 : 436,648.10 = 80,736.69 : x
  2. Step 2: Convert to fraction form
    291,098.75/436,648.10 = 80,736.69/x
  3. Step 3: Cross multiply
    291,098.75x = 436,648.10 × 80,736.69
  4. Step 4: Simplify right side
    291,098.75x = 35,253,521,885.11
  5. Step 5: Solve for x
    x = 35,253,521,885.11/291,098.75
  6. Step 6: Final answer
    x = 121,105.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.